Spark-arresting smoke-stack.



No. 764,658. PATENTED JULY 12, 1904. H. G. CLAY. SPARK ARRBSTING SMOKESTACK.

APPLICATION FILED M121. 1904.

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HARRY (l. CLAY, OF COLUMBUS, INDIANA, ASSIGNOR TO REEVES & COM- PANY, OFCOLUMBUS, INDIANA, A CORPORATION OF INDIANA.

SPARK-ARRESTING SMOKE-STACK.

SPECIFICATION forming part of Letters Patent No. 764,658, dated. July12, 1904. .Lpplication filed May 21, 1904. Serial No. 209,130. omlldel-l T aZZ whom it may concern.-

Be it known that I, I'IARRY O. CLAY, a citizen of the United States,residing at Columbus, in the county of Bartholomew and State of Indiana,have invented certain new and useful Improvements in Spark ArrestingSmoke- Stacks, of which the following is a specification.

In the applications of smoke-stacks to traction-engines it has beencustomary heretofore to arrange an inverted conical screen in the upperend of the stack, means being provided by which the screen could belifted a short distance out of the stack, so as to thus leave a freeropening for the smoke when there are no sparks therein. The arrangementof the screen within the stack has been necessary, because if the screenis arranged outside the height of the stack is so materially increasedthat difficulty is experienced in going under trees along the road andthrough covered bridges and the like. WVith the screen inverted andentirely within the stack the draft is cut down to a very considerableextent and difliculty is experienced in burning light fuel such asstraw, wood, &c.-and for this reason operators are inclined to lift thescreen out of the stack, and thus run the risk of fire.

The object of my present invention is to provide a construction in whichthe conical (or closed) end may be readily shifted so as to be eitherinverted and entirely within the stack for convenience in transportationand where hard fuels are used or may be turned point upward and arrangedentirely outside the stack, thus giving free draft for burning lightfuels.

The accompanying drawings illustrate my said invention.

Figure 1 is an elevation of a stack embodying my invention with thescreenpoint uppermost and entirely outside the stack; Fig. 2, anelevation at right angles to that shown in Fig. 1 and with the screeninverted and entirely within the stack; Fig. 3, a view similar to Fig. 2with the screen moved partly out of the stack; Fig 1, a central sectionof the upper end of the stack parallel with the plane of Fig. 1; Fig. 5,a similar section parallel with the plane of Fig. 2; Fig. 6, a plan ofFig. 2, and Fig. 7 a detail of one of the supporting-rods.

In the drawings, 10 indicates a stack of any desired construction andprovided at its upper end with a flange 11, which is recessed at 12 toreceive the screen-ring 13, to which the conical screen 14 is attached.Ring 13 is provided at opposite sides with a pair of perforated cars 15,and the upper portion of flange 11 is grooved at opposite sides at 16 toform receptacles for the cars 15 Flange 11 in the bottoms of the grooves16 is perforated by a pair of vertical openings 17, through whichvertical rods 18 may slide freely. Each rod 18is shouldered at its upperend,

thus providing a reduced portion 19 (which passes through theperforations of cars 15) and a shoulder 20, upon which the said ears mayrest. The screen-ring is secured to the rods 18 by means of removablepins 21, passing through the portion 19. The lower end of each rod 18 ispivoted to one arm of a yoke 22, which is carried by a lever 23, pivotedat 24 to ears 25, carried by or integral with the stack 10.

In operation the ring 13 may be attached to the rods 18, either side up,and may be readily changed from one position to the other, the ring 13fitting into the recesses 12 in either direction. By this means theoperator may readily put the cone in the position shown in Fig. 1 whenlight fuels are to be burned, so as to offer less resistance to thedraft and at the same time form an effectual stopper for all sparks, orwhen the engine is to be moved from one place to the other the operatormay readily turn the cone to the positions shown in Fig. 3. The cone maybe raised and lowered by the lever 23 when in either position. i

I claim as my invention 1. The combination, with a smoke-stack, of aspark-arresting screen having a closed end adapted to be inserted intothe upper end of the stack, one end of said screen being provided withmeans whereby the screen maybe arranged upon the stack with its closedend either up or down.

2. The combination, with a stack, of a vertically-movable screen-supportcarried thereby, a spark-arresting screen having a closed end adapted tobe inserted into the stack, and means for detachably attaching saidscreen to said vertically movable support with the closed end either upor down, for the purpose set forth.

3. The combination, with a stack having a recessed upper end andvertical rod-guides, of a screen-ring adapted to lie in said recessedupper end and provided with perforated ears registering with said.rod-guides, a screen secured to said ring and having a closed endadapted to enter the upper end of the stack, screen-supporting rodsarranged in said rodguides, means for moving said rods vertically, anddetachable connections between said rods and the screen-ring whereby thescreen may be supported upon said rods with its closed end either up ordown.

i. The combination, with a smoke-stack having a recessed upper end, of ascreen-ring adapted to lie in said recess with either side uppermost,and a screen having a closed end carried by said ring whereby, byreversing the position of said ring in the recesses, the screen may bearranged with its closed end uppermost and out of the stack, or the saidclosed end may be projected downward into the stack. 1

In witness whereof I have hereunto set my hand and seal, at Columbus,Indiana, this 11th day of May, A. D. 1904.

HARRY C. CLAY. [L. s] Witnesses:

W. B. DENISON, FRED DoELLER.

